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# FilteringService class
#
# Used to filter Issues and MergeRequests collections by set of params
#
# Arguments:
# klass - actual class like Issue or MergeRequest
# current_user - which user use
# params:
# scope: 'created-by-me' or 'assigned-to-me' or 'all'
# state: 'open' or 'closed' or 'all'
# group_id: integer
# project_id: integer
# milestone_id: integer
# assignee_id: integer
# search: string
# label_name: string
# sort: string
#
class FilteringService
attr_accessor :klass, :current_user, :params
def execute(klass, current_user, params)
@klass = klass
@current_user = current_user
@params = params
items = init_collection
items = by_scope(items)
items = by_state(items)
items = by_group(items)
items = by_project(items)
items = by_search(items)
items = by_milestone(items)
items = by_assignee(items)
items = by_label(items)
items = sort(items)
end
private
def init_collection
table_name = klass.table_name
if project
if project.public? || (current_user && current_user.can?(:read_project, project))
project.send(table_name)
else
[]
end
elsif current_user && params[:authorized_only].presence
klass.of_projects(current_user.authorized_projects)
else
klass.of_projects(Project.accessible_to(current_user))
end
end
def by_scope(items)
case params[:scope]
when 'created-by-me', 'authored' then
items.where(author_id: current_user.id)
when 'all' then
items
when 'assigned-to-me' then
items.where(assignee_id: current_user.id)
else
raise 'You must specify default scope'
end
end
def by_state(items)
case params[:state]
when 'closed'
items.closed
when 'all'
items
when 'opened'
items.opened
else
raise 'You must specify default state'
end
end
def by_group(items)
if params[:group_id].present?
items = items.of_group(Group.find(params[:group_id]))
end
items
end
def by_project(items)
if params[:project_id].present?
items = items.of_projects(params[:project_id])
end
items
end
def by_search(items)
if params[:search].present?
items = items.search(params[:search])
end
items
end
def sort(items)
items.sort(params[:sort])
end
def by_milestone(items)
if params[:milestone_id].present?
items = items.where(milestone_id: (params[:milestone_id] == '0' ? nil : params[:milestone_id]))
end
items
end
def by_assignee(items)
if params[:assignee_id].present?
items = items.where(assignee_id: (params[:assignee_id] == '0' ? nil : params[:assignee_id]))
end
items
end
def by_label(items)
if params[:label_name].present?
items = items.tagged_with(params[:label_name])
end
items
end
def project
Project.where(id: params[:project_id]).first if params[:project_id].present?
end
end
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